Well, PJ O'Rourke reviewed it, and he doesn't have much nice to say:
PJ O'Rourke: Atlas Shrugged, And So Did I
In “Atlas Shrugged–Part I” a drink is tossed, strong words are bandied, legal papers are served, more strong words are further bandied and, finally, near the end, an oil field is set on fire, although we don’t get to see this up close. There are many beautiful panoramas of the Rocky Mountains for no particular reason. And the movie’s title carries the explicit threat of a sequel.
I won't post any more of the review for fear the thread would be moved to the podium (although perhaps that's naturally a better place for a movie like this), but it's obviously a bad sign when someone describes the probability of a sequel as a threat.